Official NHA Assessment

Race 4: WSB GRAND HERITAGE 20 DECEMBER GRADUATION PLATE (For 1 & 2 Time Winners & Maidens)

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Line Horse
Elegantrix
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
3 / 8
Within 2 points
Significant Diffs
3 / 8
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    One Eye On Vegas     3    56.0    1    0.00     5.0   98    93           78    -20
2    Elegantrix           2    56.0    2    3.30     0.0   104   104          104   +0
3    Shadowfax            2    56.0    3    3.50     0.0   105   104          104   -1
4    Aristotle            3    60.0    4    4.00     5.0   108   102          102   -6
5    Whispering Death     2    59.0    5    5.50     0.0   101   109          109   +8
6    Tina Lovelace        2    53.0    6    6.40     0.0   105   97           97    -8
7    Pumpkin Pie          3    59.5    7    6.45     5.0   92    100          100   +8
8    Singleton Sam        2    56.0    8    11.25    0.0   98    103          103   +5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 One Eye On Vegas 98 106 78 +28 5.0 -
2 Elegantrix Line 104 106 104 +2 0.0
3 Shadowfax 105 102 104 -2 0.0 -
4 Aristotle 108 106 102 +4 5.0 -
5 Whispering Death 101 99 109 -10 0.0 -
6 Tina Lovelace 105 95 97 -2 0.0 -
7 Pumpkin Pie 92 92 100 -8 5.0 -
8 Singleton Sam 98 98 103 -5 0.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points